Sql 带开始时间和结束时间的时间桶

我有这样的数据

machine,start,end
A, 00:00, 00:01
B, 00:01, 00:02
C, 00:00, 00:03

我想为绘制图表进行汇总

start, end, value
00:00, 00:01, 2
00:01, 00:02, 2
00:02, 00:03, 1

该值是开始-结束持续时间内机器工作的数量。我试着利用时间、水桶和缺口

但是这个函数只使用一列。我应该使用哪个函数来完成此操作

谢谢

-------更多示例

machine,start,end
A, 00:00:00, 00:01:00
F, 00:00:30, 00:01:30
B, 00:01:00, 00:02:00
C, 00:00:00, 00:03:00

结果应该是

start, end, value
00:00, 00:01, 3
00:01, 00:02, 3
00:02, 00:03, 1

---

在Postgres中，可以通过取消激发行，然后计算：

select 
    x.tt as t_start, 
    lead(x.tt) over(order by x.tt) as t_end, 
    sum(sum(cnt)) over(order by x.tt) val
from mytable t
cross join lateral (values (t.t_start, 1), (t.t_end, -1)) x(tt, cnt)
group by x.tt

---

在Postgres中，可以通过取消激发行，然后计算：

select 
    x.tt as t_start, 
    lead(x.tt) over(order by x.tt) as t_end, 
    sum(sum(cnt)) over(order by x.tt) val
from mytable t
cross join lateral (values (t.t_start, 1), (t.t_end, -1)) x(tt, cnt)
group by x.tt

---

使用Generate_系列生成分钟间隔，然后左连接：

---

使用Generate_系列生成分钟间隔，然后左连接：

---

我增加了更多的例子，你能检查一下吗？谢谢alot@rura6502 . . . 将逻辑中的分钟替换为秒。我添加了更多示例，您能检查一下吗？谢谢alot@rura6502 . . . 只要在逻辑中将分钟替换为秒。我认为查询缺少group by-see我认为查询缺少group by-see

select m.second as start,
       m.second + interval '1 second' as end,
       count(t.machine)
from (select generate_series(min('00:' || start), max('00:' || end), interval '1 second') as second
      from t
     ) m left join
     t
     on m.second < t.end and
        m.second >= t.start
group by m.second
order by m.second;